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A2 Physics | Post your doubts here

user

user

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Aqsa Mohd said:
can i a
sk one thing plz..
may/june o8 p5 ka queston 2 ka parts a) kaisy krna hy ? :S i didnt understand that at ol
Click to expand...
aoa wr wb!
take ln of the eqn given u'll get lnR = ln Ro - pnx
y is ln R [they said in the question...] eqn is in the form y = mx + c [lnR = - pnx + ln Ro ]

so gradient is -pn
and y intercept is lnRo
 
Aqsa Mohd

Aqsa Mohd

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user said:
aoa wr wb!
take ln of the eqn given u'll get lnR = ln Ro - pnx
y is ln R [they said in the question...] eqn is in the form y = mx + c [lnR = - pnx + ln Ro ]

so gradient is -pn
and y intercept is lnRo
Click to expand...
thanks alot . :)
 
angelicsuccubus

angelicsuccubus

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Mustehssun Iqbal said:
Assalamu alaikum,
please solve these doubts and explain them before the exam. Thanks
http://www.xtremepapers.com/papers/...and AS Level/Physics (9702)/9702_s06_qp_2.pdf
q.5 part b.... and q6. part b...
quote]

5b:

W= 1/2Fx and F=kx

so W= 1/2kx^2

When taking work done from x1 to x2..

W=1/2kx2^2 - 1/2kx1^2 .............> W=1/2k(x2^2 - x1^2)

6b:

when a loud sound is heard, I think it's from node to node so:

wavelength = 2 x (32.4 x 10^-2)
speed= f λ
do the rest.
Click to expand...
 
usmiunique

usmiunique

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angelicsuccubus said:
well as I said, for your worst fit line, the line should start from the top of the first error bar and connect to the bottom of the last error bar, and should pass through all error bars
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The worst line can EITHER be the steepest possible line OR the shallowest possible line.. What is important is that it pass through ALL the error bars.. Sometimes it happens that the line you described DOESNOT pass through all the error bars. In that case we take the opposite line ie from the bottom of the first error bar to the top of the last error bar!
 
user

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usmiunique said:
The worst line can EITHER be the steepest possible line OR the shallowest possible line.. What is important is that it pass through ALL the error bars.. Sometimes it happens that the line you described DOESNOT pass through all the error bars. In that case we take the opposite line ie from the bottom of the first error bar to the top of the last error bar!
Click to expand...
^another important point

smzimran Mustehssun Iqbal alphabravocharlie angelgirl:) hassam Aqsa Mohd SkyPilotage
 
tasnim007

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mr_perfect said:
my xams have been shifted to 7.30 pm from 11.00 am . i m givin 9702_S12_qp_52 . so after u finish your xams can u plz post the questions in this thread . if u cant do that just INBOX me then . thnx for your help . i will pray 4 u if u help me . whoever will inbox me the questions for paper S12_qp_52 will INSHA-ALLAH ace in their xams
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DUDE if you are asking for the questions before giving the exam.....as much as I might have wanted this.........BUT THAT'S JUST WRONG!! So its best you give the exam with what you know. Trust me if you do the right thing, you will be helped by Allah, insh'Allah. And best of luck. ;) (y)
 
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